Stephen hughes



(No Model.)

S. HUGHES.

UBNTRIFUGAL BOLTING REEL.

Patented Dec. 2. 1884.

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Witnesses 5 m mmw\ Inventor y 2 7 Unitas STATES STEPHEN HUG-HES, OF HAMILTON,

OHIO, ASSIGNOB 'TO THE STEPHEN HUGHES MANUFACTURING COMPANY, OF SAME PLACE.

CENTRIFUGAL BOLTlNG-REEL.

SPECIFICATION forming part of Letters Patent. No. 308,613, dated December 2, 1884.

(No model.)

To aJZ whom it may concern:

Be it known that l, STEPHEN HUGHES, of Hamilton, Butler county, Ohio, have invented certain new and useful Improvements in Centrifugal Bolting-Reels, of which the following is a specification.

This invention pertains to a machine for bolting or dusting milling products.

The invention will be readily understood from the following description, taken in connection with the accompanying drawings, in which- Figure 1 is a perspective view of a machine embodying my improvei'nents, portions of the same being broken away to exhibit the interior of the structure; Fig. 2, a vertical trans verse section of the main parts of the machine, and Fig. 3 a view of the interior surface of the feeding-stave H of the jacket.

In the drawings, A represents the framework of the machine; B, a horizontal shaft j ournaled longitudinally in the upper part of the frame; G, a driving-pulley on the rear end of the shaft; D, a rotary cylinder fast upon the. shaft; E, the periphery of the cylinder divided into three eccentri'cally-spiral surfaces, as shown in Fig. 2; F, brushes arranged longitudinally upon the cylinder and projecting somewhat from its spiral faces; G, a closed jacket, of wire-cloth or other bolting material, surrounding the rotary cylinder, and of such size as to be engaged by the brushes, and made up in separate staves; H, the top stave of the jacket, solid instead of being of wirecloth like the other staves of the jacket; I, a longitudinal series of obliquely-arranged pivoted vanes upon the inner surfaceof this top stave, H; J, crank-arms upon the journals of the vanes; K, an adjusting-rod connected with the crankarms; L, an adj usting-nut upon the adj ustingrod outside the casing of the machine; M, the inlet-spout by which the product to be treated is admitted to the interior of the jacket G; N, the outlet-spout by which the coarser product leaves the interior of the jacket; 0, the main casing around the jacket; P, downward continuations of the main casing at the sides; Q, a conveyer at the extreme bottom of the outer casing; R, the pulley by which the conveyer is driven by belt from a pulley on the main shaft of the machine. (Not shown in the drawings.)

The material to be bolted is admitted into the jacket, wherein rotates the cylinder, through the inletspout M. The centrifugal action of the cylinder throws the material to the jacketeloth, and the brushes, sweeping the interior surfaces. of the cloth, cause the finer material to pass through the cloth, whence it falls within the casing to the conveyer below to be car ried away, as desired The brushes and the eccentric spiral surfaces of the cylinder also serve to create a centrifugal air-blast, which aids in the bolting operation, as is well understood. The coarser product, too coarse to pass through the bolting-cloth, leaves the cylindercliainbcr within the jacket through the outletspout N at the end wall of the cylinder-chamber. The interior surface of the jacket is in the form of a circle, adapted to be swept by the brushes of the cylinder; but the upper stave, H, expands into an enlargement of this circle, so that the brushes do not sweep its inner surface. The oblique vanes I project downward from the inner surface of this top stave, and their depth is such that their lower edges conform substantially to the circle swept by thebrushes. The direction of the obliquity of the vanes is such that material passing across the top stave along the vanes will move forward, from one end of the machine toward the other, toward the outlet end of the j acket, whereby a feeding progress of the material through the bolt is socured. By adjusting the nut L the adj ustingrod K can be moved longitudinally, so as to alter the degree of obliquity of the vanes in an obvious manner, whereby the rate of feed due to the obliquity of the vanes may be adjusted at will and while the machine is in motion. The top stave I prefer in practice to make blank and solid; but it may be provided to some extent with bolting-cloth, if desired.

What I have termed the cylinderD is not a cylinder in fact, but it is generally understood by that name among makers and users of flour-mill machinery. The cylinder in the example shown in the drawings is conical, the large end being toward the receiving end of the machine, and the jacket is conical to conform with the conical arrangement of the cylinder, the cylinder being fitted to adjust endwise in the usual manner, so as to adjust the fit within thejacket, as is common. The tendency of the revolving cylinder is to produce a radial air-blast through the cloth, whereby the finer particles of matter are bolted through, the revolving brushes serving to sweep the surfaces of the cloth and keep it clean, and aid in the dressing and bolting operation, as is well understood. As the material in the j acket is projected tangentially across the top stave by the action of the cylinder, it tends to advance according to the obliquity ofthe vanes. By this means is secured the progress of the coarser stuff from the inlet end of the machine toward the outlet end. This manner of producing the feed in machines of this general type is not broadly new.

It is essential in my machine that there should be within the jacket a longitudinal airblast in a direction contrary to the onward flow of the coarser matter. The purpose of this longitudinal air-blast in this connection is that the finer matter may be held in suspension, so to speak, by two contending forces, one force tending to feed the material to the outlet of the n1achine,the other forcethe airblasttending to force the finer and lighter matter in the other direction. The feeding action is caused to preponderate, and the rate of preponderance is adjusted by altering the obliquity of the vanes. By this means the matter within the jacket is caused to proceed endwise through the machine at any rate de sired, and at the same time to be held in an open and fluffy condition, found in practice to be peculiarly suited to its proper treatment by the brushes.

I secure the longitudinal air-blast by means of the conical construction and arrangement of the jacket and cylinder, the centrifugal force of the latter serving to urge the air to the larger portion.

\Vhile the conical arrangement gives me at once the radial bolting-blast and the longitudinal suspension-blast, such a construction is not essential to the execution of my invention, as I may arrange the j acket and the cylinder as parallel elementsthat is, not coniealand cause the cylinder to produce simply the usual bolting-blast, while the longitudinal suspensionblast may be produced by any blast-producing device arranged to produce within the jacket a longitudinal current of air in a direction contrary to the longitudinal flow of material through the machine. A simple fan-blower inj ecting air into the discharge end of the jacket will serve to illustrate such an arrangement.

1 claim as my invention- The combination of a fixed circular bolting jacket liavinga stave presenting an enlarge ment of the jacket circle, a longitudinal series of oblique vanes arranged upon the innersur- STEPHEN HUGHES.

Witnesses:

J. W. SEE, W. A. SEWARD. 

